Kosolapov, V. (1976). Mankind and the year 2000. Progress.
Tohutoru Kātū Chicago (17th ed.)Kosolapov, V. Mankind and the Year 2000. Moscow: Progress, 1976.
Tohutoro MLA (9th ed.)Kosolapov, V. Mankind and the Year 2000. Progress, 1976.
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